I would also like to be able to add spatial audio to the video. But I think there is no real standard yet. YouTube and Facebook do have got some resources about that topic and there are some tutorials using Reaper and Kolor eyes...

I do own a GoPro Omni and a Sennheiser VR Mic. The 4 mono tracks recorded by a Zoom F8 recorder have to be converted from A to B-format using Sennheisers A-B converter plugin. In order to upload it to YouTube the output has to follow the rules described in "YouTube Spatial Audio" below (First Order Ambisonic (FOA) audio channel layouts, ACN channel ordering, SN3D normalization, FOA components W, Y, Z, X should have channel map indexes 0, 1, 2, 3, respectively, 4.0 layout).

Currently I fail to validate if my audio output (generated with Logic Pro X and the Sennheiser A-B format converter) is compliant. I do also not know yet how to replace the audio track from Autopano Video Pro with the spatial audio track from Logic Pro X.

From my point of view it would be great if I could add the 4 mono audio files to Autopano Video Pro as input and then having AVP adding it to the video. Ideally I could also use the audio plugin to configure the spatial audio.

- Can you share a workflow which outputs video and spatial audio compatible to YouTube?- Where would you like to use spatial audio?

I would appreciate this feature. I use a Zoom H2n recorder which saves directly to B-format (AmbiX order), with a mute vertical channel since it's not a true tetra.

Since AutoPano is primarily for stitching and not really for editing, it would probably be ideal to include the audio stream in a lossless format (PCM) to improve quality in the final edit.

The editing program I use (Vegas Pro) does not support directly rendering 4-channel audio into an MP4 video file, so render the audio out separately, then use FFMpeg (I bought MyFFMpeg to make it easier) to replace the audio track in the video file.

I was able to replace the audio track of one of the source video files using Logic Pro X (LPX). I used LPX in order to sync the audio recorded by the GoPro and the Zoom F8. If you open a video in LPX you can select "Export Audio to Movie" (1).The output is the same video footage with replaced audio (4 channel, ambiX order).

In Autopano Video Pro I then selected the modified video as audio source. After rendering I got a nice, stitched video with a 4 channel audio track. Currently uploading the footage to YouTube in order to validate the spatial audio...

I think my workflow didn't work out at all.. The uploaded video does not sound nice: https://youtu.be/rjbfsW7eqA0The .mov file says it's 4 channel audio, and the YouTube "360 Video Metadata"-App did work with ambiX.. but the final result in YouTube is wrong.

Does anyone know how to fix audio?Is there somewhere a documented workflow available which I could copy?

Yeah... all i hear there is raspy clicking. It's possible that YouTube converts it wrong if you upload it as a mov? (what was the audio codec in that uploaded file?)

I uploaded this earlier 360 video of mine, a direct Zoom H2n recording, as an mp4 with the audio encoded from wav to AAC using FFMPeg, then the metadata injector tool used to make it 360 + spatial audio. It seemed to work OK.

The bad thing about the new workflow is that I would have to cut the video using a video editing tool (Final Cut Pro X) after rendering, which would again add some processing time. I use the three claps technology to sync both audio sources (gopro camera 1 / Sennheiser VR Mic). But I do not want to see myself clapping on the video...

It would be useful if you could add a 4-channel audio track and sync it to the vido already in AVP. It would make it easier to make further editing afterwards, with intermediate footage that already contains the audio tracks synced. Presuming, of course, that the audio can be added to the intermediate files in a lossless format.